(in-package :TRAPS)
; Generated from #P"macintosh-hd:hd3:CInterface Translator:Source Interfaces:ioccom.h"
; at Sunday July 2,2006 7:27:52 pm.
; 
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;  Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved 
; -
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;  *	@(#)ioccom.h	8.2 (Berkeley) 3/28/94
;  
; #ifndef	_SYS_IOCCOM_H_
; #define	_SYS_IOCCOM_H_
; 
;  * Ioctl's have the command encoded in the lower word, and the size of
;  * any in or out parameters in the upper word.  The high 3 bits of the
;  * upper word are used to encode the in/out status of the parameter.
;  
(defconstant $IOCPARM_MASK 8191)
; #define	IOCPARM_MASK	0x1fff		/* parameter length, at most 13 bits */
; #define	IOCPARM_LEN(x)	(((x) >> 16) & IOCPARM_MASK)
; #define	IOCBASECMD(x)	((x) & ~(IOCPARM_MASK << 16))
; #define	IOCGROUP(x)	(((x) >> 8) & 0xff)
(defconstant $IOCPARM_MAX 8192)
; #define	IOCPARM_MAX	(IOCPARM_MASK + 1)	/* max size of ioctl args */
;  no parameters 
; #define	IOC_VOID	(unsigned long)0x20000000
;  copy parameters out 
; #define	IOC_OUT		(unsigned long)0x40000000
;  copy parameters in 
; #define	IOC_IN		(unsigned long)0x80000000
;  copy paramters in and out 
; #define	IOC_INOUT	(IOC_IN|IOC_OUT)
;  mask for IN/OUT/VOID 
; #define	IOC_DIRMASK	(unsigned long)0xe0000000
; #define	_IOC(inout,group,num,len) 	(inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))
; #define	_IO(g,n)	_IOC(IOC_VOID,	(g), (n), 0)
; #define	_IOR(g,n,t)	_IOC(IOC_OUT,	(g), (n), sizeof(t))
; #define	_IOW(g,n,t)	_IOC(IOC_IN,	(g), (n), sizeof(t))
;  this should be _IORW, but stdio got there first 
; #define	_IOWR(g,n,t)	_IOC(IOC_INOUT,	(g), (n), sizeof(t))

; #endif /* !_SYS_IOCCOM_H_ */


(provide-interface "ioccom")